Calculated field in SSRS

I have a calculated field with the following formula
projection=(a*12/b)/C

There are cases where the value of C is 0; so when you preview the report, it shows #Error for those record where C=0
I don't want to have #Error for the projection value. Is there any way to validate that? I would like to show 0 instead of #Error

The first suggestion should work, but for some reason it does not in this case. There are two values in the formula that may be causing the problem. They are:
Fields!b_cy_memo_bal.Value
Fields!d_cy_revised_bud.Value

When you put projection =IIf(Fields!d_cy_revised_bud.Value > 0, (Fields!b_cy_memo_bal.Value*12/Fields!d_cy_revised_bud.Value, 0) In some cases, #Error are returned.

What I had to do was to use a temporal variable as follow:
Temp_bal =IIf(Fields!b_cy_memo_bal.Value = 0, 1, Fields!b_cy_memo_bal.Value)
And the for the projection
=IIf(Fields!temp_bal.Value = 1, 0,Fields!temp_bal.Value*12/Fields!d_cy_revised_bud.Value)

Using examples as well as descriptions, and references to Books Online, show the documentation available for date manipulation functions and by using a select few of these functions, show how date based data can be manipulated with these functions.